WO2019110086A1 - Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche - Google Patents

Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche Download PDF

Info

Publication number
WO2019110086A1
WO2019110086A1 PCT/EP2017/081457 EP2017081457W WO2019110086A1 WO 2019110086 A1 WO2019110086 A1 WO 2019110086A1 EP 2017081457 W EP2017081457 W EP 2017081457W WO 2019110086 A1 WO2019110086 A1 WO 2019110086A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer end
sealing member
structural
sealing
structure according
Prior art date
Application number
PCT/EP2017/081457
Other languages
English (en)
Inventor
Dirk Jan Dingeman VAN WAARDHUIZEN
Leendert Jurriaan VAN DEN BERG
Original Assignee
Trelleborg Ridderkerk B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trelleborg Ridderkerk B.V. filed Critical Trelleborg Ridderkerk B.V.
Priority to PCT/EP2017/081457 priority Critical patent/WO2019110086A1/fr
Publication of WO2019110086A1 publication Critical patent/WO2019110086A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/027—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto steel structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0065—Monopile structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091—Offshore structures for wind turbines
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/085—Details of flanges for tubular masts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/57—Seals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • Structure comprising at least two interconnected structural members and a sealing system, offshore wind turbine, and method for building a sealed structure
  • the invention relates to a structure comprising at least two interconnected structural members, wherein an outer end of a first one of said at least two structural members abuts an outer end of a second one of said at least two structural members, and wherein the outer end of said first structural member is provided with a sealing system for preventing fluid to enter from the environment to the interior of the structure.
  • Wind energy is one of the solutions to meet the ever growing demand for renewable energy.
  • a large part of the required capacity of wind energy is to be installed offshore. Therefore, large offshore wind farms, comprising large amounts of offshore wind turbines, are constructed, under construction or in development.
  • a typical offshore wind turbine will comprise of a Rotor-Nacelle-Assembly (RNA) and an offshore support structure, comprising of a tubular tower and offshore foundation.
  • RNA Rotor-Nacelle-Assembly
  • monopile-based foundations make up the largest part of these offshore foundations.
  • a monopile In the first stage of installation of such a monopile foundation, a monopile is installed in the seabed and as a second stage, the transition piece, which forms the connection between the monopile and the tubular tower, is installed.
  • the connection between the monopile and transition piece is often a flange connection.
  • said sealing system comprises: a compressible sealing member extending along a surface adjacent the outer end of said second structural member; an expandable expansion member extending along and against said sealing member; an inwardly facing rigid flange surface extending along and against said expansion member, wherein said flange surface is rigidly connected to the outer end of said first structural member; wherein said expansion member is arranged to, in an expanded state, urge the sealing member against the surface adjacent the outer end of said second structural member.
  • the structural members preferably are tubular and the sealing member, the expansion member and the flange surface are substantially ring-shaped and extend around the outer surface adjacent the outer end of said second tubular structural member. Thereby a good fit between the sealing member and structural members is obtained.
  • the expansion member preferably comprises an inflatable tube.
  • the inflatable tube preferably comprises a valve, which is arranged for inserting a medium under pressure for inflating the inflatable tube.
  • the inflatable tube preferably comprises a multitude of said inflation valves, which are each arranged in a different sector of said inflatable tube along the surface adjacent the outer end of said second structural member.
  • the medium preferably is a curable or cured liquid.
  • the inflatable tube is preferably inflated with a pressure of at least 3 bar, more preferably a pressure between 5 and 10 bar.
  • the valve allows for an easy access to the interior of the inflatable tube, whereby the tube can be inflated to the desired pressure. By applying the magnitude of the inflation valves, the inflatable tube can be evenly pressurized by the applied medium.
  • the prescribed pressures ensure an adequate seal, even in case a flow of water at higher velocities impacts the sealing system.
  • the sealing member preferably comprises two sections with materials having different material properties, wherein a first section of the sealing member, which is arranged to abut the expansion member, comprises a material with higher hardness compared to the material used for a second section of the sealing member, which is arranged to abut the surface of the surface adjacent the outer end of the second structural member.
  • the sealing member is preferably made from natural and/or synthetic rubbers.
  • the inflatable tube is also preferably made from natural and/or synthetic rubbers. The choice of materials for the different sections of the sealing member results in an evenly applied pressure from the expansion member onto the sealing member, while also resulting in a reliable seal in case the surface adjacent the outer end of said second structural member has a certain surface roughness.
  • the sealing member preferably comprises two sections, a first section which is arranged to abut the expansion member having a substantially rectangular cross section and a second section, which is arranged to abut the surface adjacent the outer end of said second structural member, said second section having a rib extending from said first section and tapering towards the surface of the outer end of said second structural member.
  • the sealing member preferably comprises one and no more than one of said ribs, or the sealing member comprises two and no more than two of said ribs, or the sealing member comprises three and no more than three of said ribs, or the sealing member comprises more than three of said ribs.
  • the sealing member comprises three or more of said ribs, and wherein the rib arranged substantially in the center of the sealing member has a lower height compared to the ribs arranged substantially at the edges of the sealing member.
  • the sealing member is preferably arranged to abut the surface adjacent the outer end of the second structural member over substantially the full width of the sealing member.
  • the invention also relates to a sealing system for use in a structure according to the invention.
  • the invention relates to an offshore wind turbine, comprising a structure according to the invention, wherein said structural members are support members for the turbine.
  • Application of such a sealing system in an offshore wind turbine allows for a seal that is able to preventing fluid from entering even under the constant dynamic loading induced by the applied wind and wave loading and also shielding the connections between the different structural members from so called wave run ups along the supporting structure.
  • the invention furthermore relates to a method for producing a sealed structure, comprising the steps of: providing at least two structural members, interconnecting said structural members such that an outer end of a first one of said at least two structural members abuts an outer end of a second one of said at least two structural members, and providing a sealing system for preventing fluid to enter from the environment to the interior of the structure, said sealing system comprising: a compressible sealing member extending along and against a surface adjacent the outer end of said second structural member; an expandable expansion member extending along and against said sealing member; an inwardly facing rigid flange surface extending along and against said expansion member, wherein said flange surface is rigidly connected to the outer end of said first structural member; expanding the expansion member in order to urge the sealing member against the surface adjacent the outer end of said second structural member.
  • Figure 1 shows a cross-section of the sealing system according to a first embodiment in combination with two structural members connected at their respective flanges;
  • Figure 2 shows a cross-section of the sealing system according to an alternative embodiment in combination with two structural members connected at their respective flanges;
  • Figure 3 shows a perspective view of the sealing system according to the alternative embodiment in combination with two structural members connected at their respective flanges;
  • Figures 4A - 4D show cross-sections of different embodiments of the sealing member, in combination with the expansion member, in an undeformed and uninflated state and in a deformed and inflated state respectively.
  • Figure 1 shows a cross-section of the sealing system according to a first embodiment in combination with two structural members connected at their respective flanges.
  • the first structural member 1 is for instance a wind turbine tower section or a transition piece.
  • the second structure member 3 is for instance also a wind turbine tower section, transition piece or monopile.
  • the first structural member 1 comprises an internally extending flange 5 and an externally extending sealing system 9.
  • the second structural member 3 also comprises an internally extending flange 7. Both flanges form the flange connection connecting the first and second structural members 1, 3 and are fitted with bolt holes 6, 8 for allowing bolts to be fitted through. After torqueing of the bolts and nuts (not shown) a firm connection between the first and second structural member 1 , 3 is obtained.
  • the sealing system 9 comprises the sealing member 11 , which comprises on a first side a rib-like section comprising a single rib 12 and is arranged to abut an inflatable tube on a second side of the sealing member 13.
  • the cross-section 14 of the sealing member on the second side is substantially rectangular, such that a large contact-area with the inflatable tube 13 is achieved.
  • one inflation valve 15 for inflating the inflatable tube 13 can be seen.
  • the inflatable tube 13 can be inflated, by insertion through the valve 15, with water, grout, epoxy or any other suitable medium for inflation.
  • a supporting structuring 16 for supporting the sealing member 11 and inflatable tube 13 is arranged.
  • the supporting structure 16, which is connected to the first structural member 1, comprises, in the cross-sectional view, a C-shaped holding member 17 for holding the sealing member 11 and inflatable tube 13. Additional supports are 19 are provided for creating a substantially rigid supporting structure 16 which is firmly connected to the first structural member 1.
  • the supporting member 19 and/or supporting structure 16 can be formed integrally with the first structural member 1, but can also be attached at later stage by means of suitable connection means, such as welding, gluing or the like.
  • the inflation valve is fitted through the C-shaped holding member 17, thereby allowing to inflate the inflatable tube 13 after the first and seconder structural member 1, 3 have been connected.
  • the sealing member 11 is urged towards the second structural member, such that a rib 12, formed on an inner side of the sealing member, is urged, under pressure, against an outside surface 21 of the second structural member.
  • Figure 2 shows a cross-section of the sealing system according to an alternative embodiment in combination with the first and second structural members 101, 103 connected at their respective flanges 105, 107.
  • This alternative embodiment comprises many of the same features of the first embodiment, whereby the difference are listed below.
  • the supporting structure 116 is formed substantially integral with the first structural member.
  • the sealing system 109 is held by the substantially C-shaped holding member 117, the holding member 117 comprising a separate, but connected, locking plate 118 forming one of the legs of the substantially C-shaped holding member 117.
  • the locking plate is fitted and connected to the supporting structure 116, thereby locking the sealing system 9 in the substantially C-shaped holding member 117.
  • the locking plate 118 is connected by means of welding, gluing or the like.
  • An inflation valve 115 is again connected to the inflatable tube 113, the valve being fitted with an additional closing member 124.
  • Sealing member 111 comprises two connected sections, either integrally formed or connected by means of a suited welding technique, gluing or the like, having different material properties.
  • the first sealing member section 122 comprises a natural rubber, synthetic rubber or other suitable material with a lower hardness then the second sealing member section 125, which comprises a natural rubber, synthetic rubber or other suitable material.
  • FIG. 3 shows a perspective view of the sealing system according to the alternative embodiment, as is also shown in figure 2, in combination with two structural members connected at their respective flanges.
  • Figure 2 shows the tubular shape of the first and second structural members 101, 103.
  • the bolt holes 106 in the flange of the first structural member 101 are clearly visible.
  • a multitude of valves 115 are shown. These valves are arranged in different sectors of the inflatable tube 113.
  • Figure 4A shows, in a cross-sectional view a sealing member and inflation tube according to the first embodiment comprising a single rib 12, as also shown in figure 1.
  • the left figure of figure 4A shows the sealing member 11 and inflation tube 13 in an undeformed and uninflated state; whereas the right figure of figure 4A shows the sealing member 11 and inflation tube 13 in a deformed and inflated state.
  • the inflation tube urges the sealing member towards the surface 21 of the structural member.
  • the sealing member 11 will contact the surface 21 and deform as it is squeezed between the surface 21 and the inflation tube 13.
  • the rib formed in the section of the sealing member preferably comprising the material with the lower hardness, will deform to adjust to the contour and surface roughness of the surface 21. Thereby a reliable seal is obtained that can withstand a high pressure.
  • This embodiment yields the highest maximum contact stress at the sealing interface, compared to the embodiments of Figures 4B-C.
  • Figure 4B shows, in a cross-sectional view a sealing member 211 and inflation tube 213 according to an alternative embodiment comprising three ribs 231, 232, 233.
  • the left figure of figure 4B shows the sealing member 211 and inflation tube 213 in an undeformed and uninflated state; whereas the right figure of figure 4B shows the sealing member 211 and inflation tube 213 in a deformed and inflated state.
  • the sealing mechanism is equal to as is introduced in figure 4A. It should be noted that the ribs 231, 233 formed near the edges of the seal have a greater height hi, compared to the height h2 of the rib 232 formed substantially in the center of the sealing member.
  • the contact pressure between the ribs 231, 233 and the surface 221 is, in the deformed and inflated state, higher than the contact pressure between the center rib 232 and the surface 221.
  • the ribs 231, 232, 233 are preferably formed in the section of the rib comprising material of the lower hardness. This embodiment prevents trapped air from entering the flange opening, as the tip of the seal is pressed into the flange opening, while the contact stress is only slightly less than with the embodiment of Figure 4A.
  • Figure 4C shows, in a cross-sectional view a sealing member 111 and inflation tube 113 according to the alternative embodiment of figure 2 and 3, comprising a three ribs 123.
  • the left figure of figure 4C shows the sealing member 111 and inflation tube 113 in an undeformed and uninflated state; whereas the right figure of figure 4C shows the sealing member 111 and inflation tube 113 in a deformed and inflated state.
  • the sealing mechanism is equal to as is introduced in figure 4A.
  • the three ribs 123 have substantially the same height and are preferably formed in the section of the rib comprising material of the lower hardness. Hence, a significantly smaller difference in contact pressure exists in between the three ribs in the deformed and inflated state.
  • This embodiment prevents trapped air from entering the flange opening, as the tip of the seal is pressed into the flange opening, while the contact stress is only slightly less than with the embodiment of Figure 4A, and the configuration may be more robust and stable than the embodiment of Figure B.
  • Figure 4D shows, in a cross-sectional view a sealing member 311 and inflation tube 313 according to an alternative embodiment comprising a three ribs 331, 332, 333.
  • the left figure of figure 4D shows the sealing member 311 and inflation tube 313 in an undeformed and uninflated state; whereas the right figure of figure 4D shows the sealing member 311 and inflation tube 313 in a deformed and inflated state.
  • the sealing mechanism is equal to as is introduced in figure 4A.
  • the ribs are formed such that, in the deformed and inflated state, the sealing member 311 is in contact with the surface 321 over substantially the full width wl of the sealing member.
  • the ribs are preferably formed in the section of the rib comprising material of the lower hardness. This embodiment completely prevents air from being present in the sealing region, but has a lower contact stress than the embodiments of Figures 4A-C.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Gasket Seals (AREA)

Abstract

L'invention concerne une structure comprenant au moins deux éléments structurels interconnectés (101, 103), une extrémité extérieure d'un premier (101) desdits au moins deux éléments structurels venant en butée contre une extrémité extérieure d'un deuxième (103) desdits au moins deux éléments structurels, et l'extrémité extérieure dudit premier élément structurel (101) étant pourvue d'un système d'étanchéité (109) pour empêcher du fluide d'entrer de l'environnement à l'intérieur de la structure, ledit système d'étanchéité (109) comprenant : - un élément d'étanchéité compressible (111) s'étendant le long d'une surface adjacente à l'extrémité extérieure dudit deuxième élément structurel (103) ; - un élément d'expansion extensible (113) s'étendant le long et contre ledit élément d'étanchéité (111) ; - une surface de bride rigide orientée vers l'intérieur s'étendant le long et contre ledit élément d'expansion (113), ladite surface de bride étant reliée de manière rigide à l'extrémité extérieure dudit premier élément structurel (101) ; ledit élément d'expansion (113) étant agencé, dans un état déployé, pour solliciter l'élément d'étanchéité (111) contre la surface adjacente à l'extrémité extérieure dudit deuxième élément structurel (103).
PCT/EP2017/081457 2017-12-05 2017-12-05 Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche WO2019110086A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/081457 WO2019110086A1 (fr) 2017-12-05 2017-12-05 Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/081457 WO2019110086A1 (fr) 2017-12-05 2017-12-05 Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche

Publications (1)

Publication Number Publication Date
WO2019110086A1 true WO2019110086A1 (fr) 2019-06-13

Family

ID=60813812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/081457 WO2019110086A1 (fr) 2017-12-05 2017-12-05 Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche

Country Status (1)

Country Link
WO (1) WO2019110086A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112709672A (zh) * 2020-12-23 2021-04-27 山东中车风电有限公司 一种分片式塔架段的密封防水结构及塔架
WO2021104587A1 (fr) * 2019-11-26 2021-06-03 Vestas Offshore Wind A/S Améliorations se rapportant à des revêtements de protection environnementaux pour des structures d'éolienne
CN114618933A (zh) * 2022-03-01 2022-06-14 哈尔滨工业大学（威海） 一种用于管材冲压变形工艺的组合式充气密封方法及装置
EP4015816A1 (fr) * 2020-12-18 2022-06-22 Vestas Wind Systems A/S Procédé d'installation d'un ensemble d'étanchéité sur une ouverture d'un composant d'éolienne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178779A (en) * 1962-06-28 1965-04-20 North American Aviation Inc Multi-cell inflatable seal
US3874136A (en) * 1972-06-12 1975-04-01 Scadella Anstalt Telescopic mast structure
US4216981A (en) * 1977-08-05 1980-08-12 Spiro Investment S.A. Connecting lengths of tubing
EP2826932A2 (fr) * 2013-07-12 2015-01-21 Siegthalerfabrik GmbH Bride de liaison entre deux composants, en particulier une tour d'une éolienne
DE102014018483A1 (de) * 2014-12-16 2016-06-16 Ambau Gmbh Dichtungsvorrichtung zum Abdichten einer Verbindung sowie Offshore-Anlage mit einer solchen Dichtungsvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178779A (en) * 1962-06-28 1965-04-20 North American Aviation Inc Multi-cell inflatable seal
US3874136A (en) * 1972-06-12 1975-04-01 Scadella Anstalt Telescopic mast structure
US4216981A (en) * 1977-08-05 1980-08-12 Spiro Investment S.A. Connecting lengths of tubing
EP2826932A2 (fr) * 2013-07-12 2015-01-21 Siegthalerfabrik GmbH Bride de liaison entre deux composants, en particulier une tour d'une éolienne
DE102014018483A1 (de) * 2014-12-16 2016-06-16 Ambau Gmbh Dichtungsvorrichtung zum Abdichten einer Verbindung sowie Offshore-Anlage mit einer solchen Dichtungsvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021104587A1 (fr) * 2019-11-26 2021-06-03 Vestas Offshore Wind A/S Améliorations se rapportant à des revêtements de protection environnementaux pour des structures d'éolienne
US20220381227A1 (en) * 2019-11-26 2022-12-01 Vestas Wind Systems A/S Improvements relating to environmental protection covers for wind turbine structures
EP4015816A1 (fr) * 2020-12-18 2022-06-22 Vestas Wind Systems A/S Procédé d'installation d'un ensemble d'étanchéité sur une ouverture d'un composant d'éolienne
WO2022128034A1 (fr) * 2020-12-18 2022-06-23 Vestas Wind Systems A/S Procédé d'installation d'un ensemble d'étanchéité sur une ouverture d'un élément d'éolienne
CN112709672A (zh) * 2020-12-23 2021-04-27 山东中车风电有限公司 一种分片式塔架段的密封防水结构及塔架
CN114618933A (zh) * 2022-03-01 2022-06-14 哈尔滨工业大学（威海） 一种用于管材冲压变形工艺的组合式充气密封方法及装置

Similar Documents

Publication Publication Date Title
WO2019110086A1 (fr) Structure comprenant au moins deux éléments structurels interconnectés et un système d'étanchéité, turbine éolienne en mer, et procédé de construction de structure étanche
US20230036999A1 (en) Apparatus
KR850001768B1 (ko) 금속 슬리브 설치방법
US7300229B1 (en) Repair jacket for pilings and method
CN102575508B (zh) 环形阻挡装置
EP3140512B1 (fr) Procédé de production d'un élément de construction, en particulier un élément de tunnel, comprenant un joint étanche à l'eau
WO2019034616A1 (fr) Baquet d'aspiration segmenté
EP0344896B1 (fr) Laminé pour le gainage de conduites et méthode d'application
JP2019015282A (ja) 波力発電装置
TW201925614A (zh) 包括至少兩個互連結構構件以及密封系統，海岸風力發電機組的結構，以及用於構成密封結構的方法
CN105887909A (zh) 瓣式伞型复合单桩基础
CN110594488B (zh) 一种地下管道沟槽支护及监测一体化结构及施工方法
CN110820736B (zh) 一种海上桩抗风浪装置
US20020113379A1 (en) Sealing device
CN110593324A (zh) 一种沉管隧道用止水带及其用于限制沉管拉合晃动的方法
US20230193996A1 (en) Method for building a sealed structure comprising two tubular members, a sealed structure, an offshore wind turbine and a sealing system
CN114592510B (zh) 自由段与锚固段弹性隔断的施工方法
CN208281700U (zh) 一种管道修复结构
CN114592511B (zh) 自由段与锚固段弹性隔断结构
JP2018193733A (ja) 更生管用支保工装置
CN218441258U (zh) 下水管道维护用内衬板
CN112392489B (zh) 一种密封件及含有其的盾构密封组件
CN214742943U (zh) 一种浮动预紧碟簧
US20230010421A1 (en) Self-repairing expandable tubular apparatus
JPH06299790A (ja) トンネル内管体構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17821815

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17821815

Country of ref document: EP

Kind code of ref document: A1